In each episode of “Cesar Millan’s Leader of the Pack”, premiering Jan. 5 on Nat Geo WILD, Millan combats the global issue of canine abandonment, giving “unadoptable” dogs a second chance and coaching families across Europe who are vying for the opportunity to adopt these lucky pups. (Source: National Geographic Wild)

Sophia is a sweet dog with one major problem: she is terrified of everything. Having spent almost her entire life in shelters, Sophia never learned to trust or socialize with humans. Cesar Millan takes on the challenge to find the right leader to break Sophia out of her shell, as she must learn to trust people or she may spend the rest of her life in a cage. Who will come out on top and be fit to make Sophia a member of their pack?